SUBPICOSECOND EMISSION STUDIES OF BACTERIAL REACTION CENTERS

被引：118
作者：
HAMM, P
GRAY, KA
OESTERHELT, D
FEICK, R
SCHEER, H
ZINTH, W
机构：
[1] UNIV MUNICH,INST MED OPT,BARBARASTR 16,W-8000 MUNICH 2,GERMANY
[2] UNIV MUNICH,INST BOT,W-8000 MUNICH 2,GERMANY
[3] MAX PLANCK INST BIOCHEM,W-8033 MARTINSRIED,GERMANY
来源：
BIOCHIMICA ET BIOPHYSICA ACTA | 1993年 / 1142卷 / 1-2期
关键词：
REACTION CENTER; FEMTOSECOND SPECTROSCOPY; FLUORESCENCE; PHOTOSYNTHESIS; (RHODOBACTER-SPHAEROIDES); (C-AURANTIACUS);
D O I：
10.1016/0005-2728(93)90090-3
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The spontaneous emission of reaction centers from native and mutated Rhodobacter sphaeroides and from wild type Chloroflexus aurantiacus is investigated by fluorescence up-conversion with high temporal resolution. The time constant of 0.9 ps previously observed in transient absorption experiments on wild type reaction centers of Rhodobacter sphaeroides does not appear in the emission experiment. However, all investigated reaction centers display a biexponential decay of the emission with time constants in the 2 ps to 25 ps range. The experimental results are discussed within the frame of different reaction models including a possible sample heterogeneity or a transient electron transfer to the inactive pigment branch.
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页码：99 / 105
页数：7
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